<%@ page import="java.util.ArrayList" %>
<%@ page import="java.util.List" %>
<%@ page import="java.sql.Connection" %>
<%@ page import="java.sql.Statement" %>
<%@ page import="java.sql.ResultSet" %>
<%@ page import="java.sql.DriverManager" %>
<%@ page import="edu.sctu.User" %><%--
  Created by IntelliJ IDEA.
  User: tanfei
  Date: 2018/6/28
  Time: 18:17
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<br>
<html>
<head>
    <title>userlist</title>
</head>
<body>
<%
    //未登录
    if (session.getAttribute("username")==null){
        //跳转
        request.getRequestDispatcher("login.jsp");
    }
%>

<style type="text/css">
    table {
        border: 1px solid #000;
        border-collapse: collapse;
    }

    td, th {
        border: 1px solid #000;
        padding: 10px;
    }
</style>
<jsp:include page="header.jsp"></jsp:include>
<table>

    <tr>
        <th>编号</th>
        <th>用户名</th>
        <th>密码</th>
        <th>操作1</th>
        <th>操作2</th>
    </tr>



    <%


        //alt + insert


        List<User> userList = new ArrayList<User>();
        //list.add(new User(1, "chengongsuo", "123456"));
        //list.add(new User(2, "zhao", "123456"));
        //list.add(new User(3, "John", "123456"));
        //list.add(new User(4, "xie", "123456"));

        //3 + 1
        Connection connection = null;
        Statement statement = null;
        ResultSet resultSet = null;

        String sql = "select * from t_users";

        Class.forName("com.mysql.jdbc.Driver");

        connection = DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/sctu_javaweb_2018?serverTimezone=UTC",
                "root",
                "123456"
        );

        statement = connection.createStatement();

        resultSet = statement.executeQuery(sql);

        while (resultSet.next()) {
            int id = resultSet.getInt(1);
            String username = resultSet.getString(2);
            String password = resultSet.getString(3);

            User u= new User();
            u.setId(id);
            u.setUsername(username);
            u.setPassword(password);

            userList.add(u);
        }
        statement.close();
        resultSet.close();
        connection.close();



        // for (User user : list) {

        //    out.write("<tr><td>" + user.id + "</td><td>" + user.username
        //            + "</td><td>" + user.password + "</td>" +
        //           "<td><a href='deleteUserHandler.jsp?id=" + user.id + "'>删除</a></td>" +
//                    "<td><a href='userUpdate.jsp?id=" + user.id + "&username" + user.username + "&password=" + user.password + "'>更新</a></td></tr>");
        //  }
        pageContext.setAttribute("userlist",userList);

    %>
    <c:forEach var="user" items="${userList}">
        <tr>
            <td>${user.id}</td>
            <td>${user.username}</td>
            <td>${user.password}</td>
            <td><a href='deleteUserHandler.jsp?id=${user.id}'>删除</a></td>
            <td><a href='userUpdate.jsp?id=${user.id}&username=${user.password}'>更新</a></td>
        </tr>
    </c:forEach>


</table>

<%@ include file="footer.jsp"%>

<!--jsp前缀-->
<%--<%@ include file"footer.jsp"%>--%>

</body>
</html>

